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Studies of early home videos of children diagnosed with autism spectrum disorder (ASD) have shown decreased “response-to-name” behavior during infancy. To examine the accuracy of this behavior as a marker for autism, researchers compared infants who had older siblings with ASD (at-risk group) and infants who did not have siblings with ASD (controls) and then followed the children prospectively for 2 years.
Responses to a standardized test of response to name (turning and making eye contact) were examined in at-risk infants and control infants at age 6 months and age 12 months. At age 24 months, 46 at-risk infants and 25 control infants with data from the 12-month assessment were evaluated for ASD and other developmental delays.
At 6 months, d…